Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
A new fluorescence probe comprising nitrogen-doped graphene quantum dots for the selective and quantitative determination of cerium(iv) | |
Chu, Xu1; Wang, Shengnan1; Cao, Yan1,2 | |
2020-01-21 | |
发表期刊 | NEW JOURNAL OF CHEMISTRY |
ISSN | 1144-0546 |
卷号 | 44期号:3页码:797-806 |
通讯作者 | Cao, Yan(caoyan@ms.giec.ac.cn) |
摘要 | Graphene quantum dots (GQDs) have been widely applied in the fields of photocatalysis, bioimaging, drug delivery, metal ion detection and up-conversion photoluminescence, etc. This work introduces N-doped graphene quantum dots (N-GQDs), prepared via a one-step green wet chemical method using graphene oxide (GO) as a raw material, followed by dialysis, to create a new fluorescence sensor for rare earth elements (REEs). The obtained N-GQDs with rich oxygen functional groups showed a strong blue emission which was almost unaffected by extreme pH conditions. Due to the selective coordination to Ce4+ over other REEs, the N-GQDs can be used as a sensitive and selective chemo-sensor of Ce4+ ions in aqueous solution. The concentration range and the detection limit of the N-GQDs fluorescence probe were 1-44 mu M and 0.8352 mu M for Ce4+, respectively. The possible quenching mechanism was also explored via material characterization tools, such as FTIR, XPS, UV-vis and DLS analysis. The interference from other REEs was negligible during the quantitative determination of Ce4+. This method proved to be simple, sensitive, low cost, and also reliable for practical applications. |
DOI | 10.1039/c9nj04518j |
关键词[WOS] | CARBON DOTS ; RARE-EARTH ; SENSITIVE DETECTION ; ION ; PHOTOLUMINESCENCE ; ELEMENTS ; SAMPLES ; SENSOR ; CE4+ |
收录类别 | SCI |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[21676001] ; National Key R&D Program of China[2017YFE0105500] |
WOS研究方向 | Chemistry |
项目资助者 | National Natural Science Foundation of China ; National Key R&D Program of China |
WOS类目 | Chemistry, Multidisciplinary |
WOS记录号 | WOS:000509327200018 |
出版者 | ROYAL SOC CHEMISTRY |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.giec.ac.cn/handle/344007/26421 |
专题 | 中国科学院广州能源研究所 |
通讯作者 | Cao, Yan |
作者单位 | 1.Anhui Univ, Coll Chem & Chem Engn, Hefei 230601, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China |
推荐引用方式 GB/T 7714 | Chu, Xu,Wang, Shengnan,Cao, Yan. A new fluorescence probe comprising nitrogen-doped graphene quantum dots for the selective and quantitative determination of cerium(iv)[J]. NEW JOURNAL OF CHEMISTRY,2020,44(3):797-806. |
APA | Chu, Xu,Wang, Shengnan,&Cao, Yan.(2020).A new fluorescence probe comprising nitrogen-doped graphene quantum dots for the selective and quantitative determination of cerium(iv).NEW JOURNAL OF CHEMISTRY,44(3),797-806. |
MLA | Chu, Xu,et al."A new fluorescence probe comprising nitrogen-doped graphene quantum dots for the selective and quantitative determination of cerium(iv)".NEW JOURNAL OF CHEMISTRY 44.3(2020):797-806. |
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